radiolarite

Experimental results showed that double coats of carbon and gold on the conductive coating of radiolarite should be used.

过多次验，认为放射虫化石的表面导电处理应采用碳-金双层镀法。

In this paper the sample preparation techniques of radiolarite were discussed in order to get high quality secondary electron images in SEM.

讨论了为获得放射虫化石的高质量的二次电子图像所采用的备方法。